The scientist at the heart of the ‘Climategate’ row over global warming hid data ‘because it was standard practice’, it emerged today.

Professor Phil Jones, director of the University of East Anglia’s prestigious climatic research unit, today admitted to MPs that the centre withheld raw station data about global temperatures from around the world.

The world-renowned research unit has been under fire since private emails, which sceptics claimed showed evidence of scientists manipulating climate data, were hacked from the university’s server and posted online.

Now, an independent probe is examining allegations stemming from the emails that scientists hid, manipulated or deleted data to exaggerate the case for man-made global warming.

Prof Jones today said it was not ’standard practice’ in climate science to release data and methodology for scientific findings so that other scientists could check and challenge the research.

He also said the scientific journals which had published his papers had never asked to see it.